Speed-regulator for talking-machines



J. WOLFF.

SPEED REGULATOR FOR TALKING MACHINES.

APPLICATION FILED FEB.1, 1917.

1 32 1 1 79. Patented N (W. 11, 1919.

7 P 1915 8 i i n n I i h .1

fizz/672207 UNITED STATES PATENT orrion JOSEPH WOLFF,

0F BROOKLYN, NEW YORK, ASSIGNOR ro' sonoaa PHONOGRAPH CORPORATION, ACORPORATION OF NEW YORK. V

SPEED-REGULATOR non TALKING-MACHINES. 1

Specification of Letters Patent.

Patented Nov. 11, 1919.

Application filed February 1,1917. Serial No. 145,889.

To all whom it may concern Be it known that I, JosErH WoLrr, a subjectof the King of Great Britain and Ire- I land, residing in the borough ofBrooklyn, county of Kings, State of New York, have invented a certainnew and useful Speed Regulator for Talking-Machines, of which whereinthe parts will always be in cooperati 'e relation with each other. 7

This and further objects will more fully appear in the followingspecification and accompanying drawings considered together orseparately In the drawings,-

Figure 1 is a. side elevation of the operative parts of a disk recordtalking machine provided with my invention; and

Fig. 2 is a top plan view of the brake beam lever.

Fig. 3 is a detail sectional view.

In all of the above'views, like parts are designated by the samereference characters.

In carrying out my invention, I provide a casing 1 having a motor board2, to the under side of which a motor3 is secured. The main shaft 4;. ofthe motor extends upward through the motor board, and carries.

thereon a turntable 5 on'which a'disk record 6 is adapted to rest. Themotor illustrated is the usual spring motor having a spring 7 barrel 7which is geared to the main shaft 4:, as is common.

A governor shaft 8 is carried in suitable bearings on the motor frame,and is driven from a worm wheel (not shown) on the main shaft, whichmesheswith a worm 9 on the 'shaft 8. A disk 10 is carried by the shaft,

but the shaft is free to rotate in the disk. A collar 11 is secured tothe shaft 8 and spring arms 12 connect the collar and disk. A weight 13is carried by each'arm 12.

Pivoted to the motor frame is a brake beam 14 which carries a brake shoe15 adapted to engage the disk and retard the motor. A lever 16 extendsfrom the brake beam, and the extremity of the lever is provided with aslot 17, with which a pin 18 engages. The pin *is carried by or integralwith a plug 19 which carries a lug 20, projecting from the side thereofand adapted to engage a spiral slot in a sleeve 20 rotatably mounted ina tubular bearing 21 fitted in the motor board. The sleeve is rotated bya crank 22 fixed to its upper end on the upper side of the motor boardto thereby effect an up-and down reciprocatory movement of the plug andits pin, by means of the engage ment of the spiral slot and lug. Thecrank carries a pointer23 which cooperates with a scale on the motorboard, and by means of which the brake shoe may be set to cause themotorto travel at the desired speed. The

lug 20 also engages a straight slot 24 in the tubular bearing 21 andprevents rotation of the plug 19 and guides the same'in its up and downmovements. A spring 25 tends to release the brake shoe from the disk.The pin 18 is made of sufficient lengthto extend a considerable distancebeyon'dfthe brake lever 16 so as to always remain in engagement with theslot 17in the brake lever. Of course, if desired, a nut or otherprojection may be added to the end of the pin 18-, but this is notessential as the pin is of such length that it cannot become disengagedfrom the slot 17.

The operation of the device is obvious;

The pin 18 is of such a lengththat no matter if what the position of thlever 16, thepin will always be in engagement with the slot 17. Thiswill prevent dislocation of the lever from theindicating mechanismcaused by vibrations in the motor.

In accordance with the provisions of the patent statute,,I havedescribed the principle of my invention together with the apparatuswhich I now consider to represent the best embodiment thereof, but Idesire to have it understood that the apparatus shown is merelyillustrative and that the'invention can be carried out in other Ways.

Havingnow described my. invention, what I claim and desire to secure byLetters Pat ent is:

1. In a speed regulator for talking machines and the like, a cabinet, amotor and a frame therefor mounted in the cabinet, a brake disk operatedby said motor, a brake beam pivoted to the motor frame and provided witha brake shoe adaptedto engage said disk, a lever fixed to and projectingfrom the brake beam and provided with an elongated slot at its free end,a rotatable cabinet, a plug loosely fitted in said sleeve and providedwith a lug adapted to engage said spiral slot and having a pin-likeprojection at its lower end adapted to engage and pass through the slotin said lever and projecting a considerable distance beyond said lever,and means for rotating said sleeve in opposite directions to move saidplug upwardly or downwardly to thereby adjust the brake shoe withrelation to the brake disk.

2. In a speed regulator for talking machines and the like, a motorboard, a motor and a frame therefor mounted on said motor board, a brakedisk operated by said motor, a brake beam pivoted to the motor frame andprovided with a brake shoe adapted to engage said brake disk, a leverfixed to and projecting from the brake beam and provided with anelongated slot at its free end, a rotatable sleeve provided with aspiral slot near its lower end mounted in the motor board, a plugloosely fitted in said sleeve and provided with a side lug adapted toengage said spiral slot and having a pin-like projection at its lowerend adapted to engage and pass through the elongated slot in said leverand extending considera le distance beyond said lever, and means forrotating said sleeve in opposite directions to move said plug upwardlyor downwardly to thereby adjust the brake shoe with relation to thebrake disk.

3. In a speed regulator for talking machines and the like, a motorboard, a motor and a frame therefor mounted on said board, a brake diskoperated by said motor, a brake beam pivoted to the motor frame andprovided with a brake shoe adapted to engage said brake disk, a leverfixed to and projecting from the brake beam and "provided with anelongated slot at its free end, a rotatable sleeve provided with aspiral slot near its lower end mounted in the motor board, a plugloosely fitted in said sleeve and provided with a side lug adapted toengage said spiral slot and having a pinlike projection at its lower endadapted to engage and pass through the elongated slot in said lever andextending considerable distance beyond said lever, means for rotatingsaid sleeve in opposite directions to move the plug upwardly ordownwardly to thereby adjust the brake shoe with relation to the brakedisk, and a spring for normally disengaging the brake shoe from thebrake Copies of this patent may be obtained for chines and the like, amotor board, a motor and a frame therefor fixed to said board, a brakediskoperated by said motor, a brake beam pivoted to the motor frame andprovided with a brake shoe to engage said brake disk, a lever fixed toand projecting from the brake beam and provided with an elongated slotat its free end, a tubular bearing fixed in the motor board, a rotatablesleeve provided with a spiral slot near its lower end fitted in saidtubular bearing, a plug loosely fitted in said sleeve and provided witha side lug adapted to engage said spiral slot and having a pin-like proection at its lower end adapted'to engage and pass through the elongatedslot in said lever and extending considerable distance beyond saidlever, and means for rotating said sleeve in opposite directions to movesaid plug upwardly or downwardly to thereby adjust the brake shoe withrelation to the brake disk.

5. In a speed regulator for talking machines and the like, a motorboard, a motor and a frame therefor fixed to said board, a brake diskoperated by the motor, a brake beam pivoted to the motor frame andprovided with a brake shoe to engage said brake disk, a lever fixed toand projecting from said brake beam and provided with an elongated slotat its free end, a tubular bearing fixed in the motor board and having alongitudinal slot in its lower end, a rotatable sleeve mounted in saidtubular bearing and having a spiral slot near its lower end adj acent tothe slot in the tubular bearing, a plug loosely fitted in said sleeveand .provided with a side lug adapted to engage the spiral slot in saidsleeve and extending into the slot in the tubular bearing, said plugalso having a pin-like projection at its lower end adapted to engage andpass through the elongated slot in said lever and extending considerabledistance beyond said lever, and means for rotating said sleeve inopposite directions to move the plug upwardly or downwardly to therebyadjust the brake shoe with relation to the brake disk, the engagement ofsaid side lug with the 1011- gitudinal slot in the tubular bearingserving to prevent rotation of the plug and guiding it in its movements.

This specification signed and witnessed this 27th day of January, 1917.

JOSEPH IVOIJFF.

\Vitnesses FRANK J. COUPE, C. J. HERMAN;

five cents each, by addressing the Commissioner of Yatents, Washington,D. G.

